New Zealand Journal of Marine and Freshwater Research abstracts

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INVASION OF A NEW ZEALAND FRESHWATER STREAM BY GLASS-EELS OF TWO ANGUILLA SPP.

D. J. Jellyman*

Marine Laboratory, Department of Zoology, Victoria University of Wellington, New Zealand

Abstract The length of post-metamorphic sea-life influences both morphology and behaviour of the glass-eels. Differences in this period of sea-life between early and late season glass-eels explain the initial avoidance but later attraction of fresh water to the glass-eels. Responses to fresh water also explain the preference for early season glass-eels to invade on the flood tide and late season glass-eels on the ebb tide. Neither the lunar cycle nor rainfall appear to be significant influences on invasion periodicity.

N.Z. Journal of Marine and Freshwater Research 11 (2) : 193-209. June 1977
Received 23 July 1975; revision received 23 June 1976. Fisheries Research Division Publication 261.

PDF file of entire paper: medium quality (1312K); (scanned from paper original: notes about this process)

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